Frame-type mining method

Abstract

The invention discloses a frame-type mining method. The frame-type mining method comprises the following steps that a, a bottom roadway is formed at the bottom of an ore block; b, a concrete false bottom extending horizontally is constructed in the bottom roadway, and draw shafts extending up and down are supported on the concrete false bottom; c, a courtyard extending up and down is formed in theore block, and human-crossing roads extending up and down are arranged on the outer sides of the concrete false bottom; d, the bottom of the ore block is subjected to underholing blasting ore breaking and mineral processing in sequence, and obtained ore blocks after mineral processing is put in ore drawing space through draw shafts; e, after the human-crossing roads and draw shafts are subject toupward supporting, and the upper part of the concrete false bottom is filled with filling materials and/or the obtained ore blocks after mineral processing to from filling space; f, first plain concrete columns extending up and down are constructed on the sides, close to the draw shafts, of the human-crossing roads, and second plain concrete columns extending up and down are constructed in the filling space; and the step d to the step f are repeated until mining of ore blocks are finished, and a concrete roof is constructed at the top of the filling space. The frame-type mining method can reasonably control ground pressure, pressing-hanging sides are reduced, and the stope working environment is improved.

Description

technical field [0001] The present disclosure relates to the technical field of mining, and in particular, relates to a frame-type mining method. Background technique [0002] According to the geological occurrence of the ore body, most of the existing mining methods are ordinary wall-cutting and filling methods, although the ordinary wall-cutting and filling method is more suitable for mining extremely thin and steeply inclined precious metal ore bodies under certain conditions, and the technology is relatively mature. However, its main shortcomings seriously restrict the further development of mining production to a certain extent, and bring many unfavorable factors, which are mainly manifested in: first, the safety guarantee ability of mining is poor, and there are often large-scale overhanging sides in the footwall during wall cutting and filling. Slight omissions are very prone to safety accidents; the second is that the labor intensity of employees is high, and operato...

AI Technical Summary

Problems solved by technology

[0002] According to the geological occurrence of the ore body, most of the existing mining methods are ordinary wall-cutting and filling methods, although the ordinary wall-cutting and filling method is more suitable for mining extremely thin and steeply inclined precious metal ore bodies under certain conditions, and the technology is relatively mature. However, its main shortcomings seriously restrict the further development of mining production to a certain extent, and bring many unfavorable factors, which are mainly manifested in: first, the safety guarantee ability of mining is poor, and there are often large-scale overhanging sides in the footwall during wall cutting and filling. Slight omissions are prone to safety accidents; the second is that the labor intensity of employees is high, and operators spend a lot of time and energy using methods such as prying and supporting to deal with the pressure suspension, which affects the normal mining operation and low labor productivity

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